On 09/02/2017 16:10, Arnd Bergmann wrote:
> The newly added hypercall doesn't work on x86-32:
>
> arch/x86/kvm/x86.c: In function 'kvm_pv_clock_pairing':
> arch/x86/kvm/x86.c:6163:6: error: implicit declaration of function 'kvm_get_walltime_and_clockread';did you mean 'kvm_get_time_scale'? [-Werror=implicit-function-declaration]
>
> This adds an #ifdef around it, matching the one around the related
> functions that are also only implemented on 64-bit systems.
>
> Fixes: 55dd00a73a51 ("KVM: x86: add KVM_HC_CLOCK_PAIRING hypercall")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
> arch/x86/kvm/x86.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 10e20afc3314..2bcdc88c8242 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -6149,6 +6149,7 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu)
> }
> EXPORT_SYMBOL_GPL(kvm_emulate_halt);
>
> +#ifdef CONFIG_X86_64
> static int kvm_pv_clock_pairing(struct kvm_vcpu *vcpu, gpa_t paddr,
> unsigned long clock_type)
> {
> @@ -6175,6 +6176,7 @@ static int kvm_pv_clock_pairing(struct kvm_vcpu *vcpu, gpa_t paddr,
>
> return ret;
> }
> +#endif
>
> /*
> * kvm_pv_kick_cpu_op: Kick a vcpu.
> @@ -6240,9 +6242,11 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu)
> kvm_pv_kick_cpu_op(vcpu->kvm, a0, a1);
> ret = 0;
> break;
> +#ifdef CONFIG_X86_64
> case KVM_HC_CLOCK_PAIRING:
> ret = kvm_pv_clock_pairing(vcpu, a0, a1);
> break;
> +#endif
> default:
> ret = -KVM_ENOSYS;
> break;
>
Applied, thanks.
Paolo
